1. A small marine animal with a sac-like body, belonging to the class Ascidiacea; a tunicate.
Usage: biology; zoology

1. Of, relating to, or belonging to ascidians or the class Ascidiacea.
Usage: biology; zoology

Examples

• The ascidian clung to the rock in shallow coastal waters.
• Ascidians are filter feeders that draw water through their bodies.
• The ascidian larva has a notochord, linking it to vertebrate evolution.
• Marine biologists studied ascidian colonies on the reef.
• This ascidian species exhibits remarkable color variation.
• Ascidian development provides insights into early chordate evolution.